CN105186806A - Insulating treatment method for joint of hydro-generator outgoing line and slip ring connecting line - Google Patents
Insulating treatment method for joint of hydro-generator outgoing line and slip ring connecting line Download PDFInfo
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- CN105186806A CN105186806A CN201510566432.3A CN201510566432A CN105186806A CN 105186806 A CN105186806 A CN 105186806A CN 201510566432 A CN201510566432 A CN 201510566432A CN 105186806 A CN105186806 A CN 105186806A
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- ring connecting
- joint
- hec51108
- connecting line
- insulation
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- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
The invention relates to an insulating treatment method for a joint of a hydro-generator outgoing line and a slip ring connecting line. The insulating treatment method mainly comprises three aspects as follows: (1) the joint of the hydro-generator outgoing line and the slip ring connecting line is coated with a high-strength thixotropic epoxy resin perfusion adhesive of which the model number is HEC51108; (2) an insulating box with openings in double sides is filled with the high-strength thixotropic epoxy resin adhesive of which the model number is HEC51108; and (3) the insulating box sleeves the joint of the hydro-generator outgoing line and the slip ring connecting line. The installation technology provided by the invention is simple to operate; combination of the high-strength thixotropic epoxy resin perfusion adhesive and the insulating box with the openings in double sides is adopted for joint insulation; compared with the traditional manually wound insulation, the discharge distance between a stator bar outgoing line and an adjacent stator bar insulating box is increased; the electric field intensity between stator windings is reduced; corona and electrocorrosion of the stator windings due to high electric field intensity are avoided; and the reliability of long-term operation of an electric generator is improved.
Description
Technical field: the present invention relates to hydraulic generator lead-out wire and collector ring connecting-wire connector place insulating treatment method.
Background technology: traditional hydraulic generator lead-out wire and collector ring connecting-wire connector place carry out manually wound insulation process after welding.Manually wound insulation and limit hold paulownia horse epoxy glass mica paper tape limit brushing room temperature setting adhesives, hold the number of plies and are usually greater than 15 layers.Must exert oneself when holding mica tape, requiring that belt is smooth can not have gauffer, and gluing is wanted evenly, and after solidification, insulating barrier can not send out sky, after the insulation of stator bar lead-out wire and adjacent stators bar insulation box spacing be greater than 8mm.But after actual manually wound insulation, often occur that insulating barrier sends out sky and insulating barrier volume is excessive, insulating barrier is sent out sky and is easily caused the leakage of generator unit direct current excessive, insulating barrier volume is excessive cause stator bar lead-out wire and adjacent stators bar insulation box spacing too small, between part lead-out wire stator bar and adjacent stators line rod, voltage is close to rated voltage, both distances are too small, and electric field strength will be too high, thus easily cause stator winding to produce corona and galvano-cautery.
Summary of the invention: the object of this invention is to provide a kind of hydraulic generator lead-out wire and collector ring connecting-wire connector place insulating treatment method, increase the arcing distance between stator bar lead-out wire and adjacent stators bar insulation box, reduce the electric field strength between stator winding, prevent stator winding corona and galvano-cautery from producing.Technical scheme of the present invention is: hydraulic generator lead-out wire and collector ring connecting-wire connector place insulating treatment method, after stator bar lead-out wire (1) and collector ring connecting line (2) weld, naked copper position all fills model is HEC51108 high strength thixotropic epoxy glue (3), in insulation booth (4), first put into model is HEC51108 high strength thixotropic epoxy glue (3), then insulation booth (4) bottom surface is clashed on rubber peel (5), model is made to be that HEC51108 high strength thixotropic epoxy glue (3) is gathered in insulation booth (4) bottom, and discharge type number is the air gap of HEC51108 high strength thixotropic epoxy glue, again insulation booth (4) is sleeved on stator bar lead-out wire (1) and collector ring connecting line (2) joint, control insulation booth (4) and stator bar lead-out wire (1), the gap uniformity of collector ring connecting line (2), insulation booth (4) is installed to and requires assigned address.
This invention mainly comprises following three aspects: it is HEC51108 high strength thixotropic epoxy potting compound that (1) stator bar lead-out wire and collector ring connecting-wire connector place coat model, (2) the insulation booth perfusion model of bilateral opening is HEC51108 high strength thixotropic epoxy glue, and (3) insulation booth is set to stator bar lead-out wire and collector ring connecting-wire connector place.Adopt the mode that in joint and insulation booth, first gluing is being set in together, installation rate can be improved compared with general manually wound insulation technique, and joint insulating inner air gap can be made to diminish, after this structure installment, joint is plane, to compare the out-of-flatness structure of manually wound insulation, effectively can reduce the probability of surface discharge.
Mounting process of the present invention is simple to operate, joint insulation adopts high strength thixotropic epoxy glue and bilateral opening insulation booth to combine and to compare with traditional manually wound insulation, increase the arcing distance between stator bar lead-out wire and adjacent stators bar insulation box, reduce the electric field strength between stator winding, avoid stator winding to cause corona and galvano-cautery because electric field strength is high, improve the reliability of generator long-time running.
Hydraulic generator lead-out wire of the present invention and collector ring connecting-wire connector place insulating treatment method adopt high strength thixotropic epoxy glue and bilateral opening insulation booth to combine, its advantage is: increase the arcing distance between stator bar lead-out wire and adjacent stators bar insulation box, reduce the electric field strength between stator winding, avoid stator winding to cause corona and galvano-cautery because electric field strength is high.
Accompanying drawing illustrates:
Fig. 1 stator bar lead-out wire and collector ring welding point
Fig. 2 fills the bilateral opening insulation booth of high strength thixotropic epoxy glue
Fig. 3 smears joint high strength thixotropic epoxy glue
Fig. 4 bilateral opening insulation booth is enclosed within joint area after filling glue
Embodiment:
The process of stator bar lead-out wire and collector ring connecting-wire connector place's insulation high strength thixotropic epoxy glue and bilateral opening insulation booth is as follows: hydraulic generator lead-out wire and collector ring connecting-wire connector place insulating treatment method, after stator bar lead-out wire 1 and collector ring connecting line 2 weld, naked copper position all fills model is HEC51108 high strength thixotropic epoxy glue 3, in insulation booth 4, first put into model is HEC51108 high strength thixotropic epoxy glue 3, then insulation booth 4 bottom surface is clashed on rubber peel 5, model is made to be that HEC51108 high strength thixotropic epoxy glue 3 is gathered in bottom insulation booth 4, and discharge type number is the air gap of HEC51108 high strength thixotropic epoxy glue, again insulation booth 4 is sleeved on stator bar lead-out wire 1 and collector ring connecting line 2 joint, control insulation booth 4 and stator bar lead-out wire 1, the gap uniformity of collector ring connecting line 2, insulation booth 4 is installed to and requires assigned address.
After stator bar lead-out wire and collector ring weld, as shown in Figure 1; After fully stirring HEC51108 high strength thixotropic epoxy glue with blender, enter in insulation booth, and insulation booth bottom surface is clashed on the thick above rubber peel of 5mm, eliminate the air gap in HEC51108 high strength thixotropic epoxy glue in insulation booth, as shown in Figure 2; As shown in Figure 3, joint all fills HEC51108 high strength thixotropic epoxy glue, and thickness is about 3mm ~ 5mm; Fill the insulation booth after glue and be sleeved on stator bar lead-out wire and collector ring joint, control the gap uniformity of insulation booth and lead-out wire, collector ring, insulation booth is arranged on assigned address; The floating high strength thixotropic epoxy glue extruded, insulation booth outer surface is cleaned out, as shown in Figure 4.After high strength thixotropic epoxy glue in insulation booth after installation at room temperature places 24h, can solidify completely.
Adopt basic mechanical design feature index of the present invention as follows:
Air gap can not be had between 1 high strength thixotropic epoxy glue and bilateral opening insulation booth.
2 joint insulation are at 3.0U
nunder kV direct voltage, DC leakage-current is less than 20 μ A.
3 joint insulation are at 2.0U
nunder+3.0kV alternating voltage, last 1min without puncturing, lightning, to smolder.
4 joint insulation are at 1.1U
nwithout visual corona vestige under kV alternating voltage.
Claims (1)
1. a hydraulic generator lead-out wire and collector ring connecting-wire connector place insulating treatment method, it is characterized in that: hydraulic generator lead-out wire and collector ring connecting-wire connector place insulating treatment method, after stator bar lead-out wire (1) and collector ring connecting line (2) weld, naked copper position all fills model is HEC51108 high strength thixotropic epoxy glue (3), in insulation booth (4), first put into model is HEC51108 high strength thixotropic epoxy glue (3), then insulation booth (4) bottom surface is clashed on rubber peel (5), model is made to be that HEC51108 high strength thixotropic epoxy glue (3) is gathered in insulation booth (4) bottom, and discharge type number is the air gap of HEC51108 high strength thixotropic epoxy glue, again insulation booth (4) is sleeved on stator bar lead-out wire (1) and collector ring connecting line (2) joint, control insulation booth (4) and stator bar lead-out wire (1), the gap uniformity of collector ring connecting line (2), insulation booth (4) is installed to and requires assigned address.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510566432.3A CN105186806A (en) | 2015-09-08 | 2015-09-08 | Insulating treatment method for joint of hydro-generator outgoing line and slip ring connecting line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510566432.3A CN105186806A (en) | 2015-09-08 | 2015-09-08 | Insulating treatment method for joint of hydro-generator outgoing line and slip ring connecting line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105186806A true CN105186806A (en) | 2015-12-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510566432.3A Pending CN105186806A (en) | 2015-09-08 | 2015-09-08 | Insulating treatment method for joint of hydro-generator outgoing line and slip ring connecting line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105186806A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106685121A (en) * | 2017-01-16 | 2017-05-17 | 嘉兴市大成电气新材料有限公司 | Flexible plug sleeve for vertical hydraulic generator stator coil bar lead insulation box and assembly method of flexible plug sleeve |
| CN106787526A (en) * | 2017-03-30 | 2017-05-31 | 上海电气集团上海电机厂有限公司 | A kind of manufacture craft of brushless low speed synchromotor insulation booth infusion epoxy resin glue |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4309636A (en) * | 1978-08-17 | 1982-01-05 | Siemens Aktiengesellschaft | Insulation caps for stator winding head connections of an electric machine |
| JPS57126251A (en) * | 1981-01-26 | 1982-08-05 | Mitsubishi Electric Corp | Insulating method for coil end |
| US20020033649A1 (en) * | 2000-09-12 | 2002-03-21 | Atsushi Oohashi | Stator of dynamo-electric machine and manufacturing method therefor |
| CN201118303Y (en) * | 2007-11-07 | 2008-09-17 | 张祥飞 | An electromotor using aluminum enamelled wire winding |
| CN103066778A (en) * | 2012-12-18 | 2013-04-24 | 南车株洲电机有限公司 | Insulation bandaging process of electric motor winding lead wire connector |
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2015
- 2015-09-08 CN CN201510566432.3A patent/CN105186806A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4309636A (en) * | 1978-08-17 | 1982-01-05 | Siemens Aktiengesellschaft | Insulation caps for stator winding head connections of an electric machine |
| JPS57126251A (en) * | 1981-01-26 | 1982-08-05 | Mitsubishi Electric Corp | Insulating method for coil end |
| US20020033649A1 (en) * | 2000-09-12 | 2002-03-21 | Atsushi Oohashi | Stator of dynamo-electric machine and manufacturing method therefor |
| CN201118303Y (en) * | 2007-11-07 | 2008-09-17 | 张祥飞 | An electromotor using aluminum enamelled wire winding |
| CN103066778A (en) * | 2012-12-18 | 2013-04-24 | 南车株洲电机有限公司 | Insulation bandaging process of electric motor winding lead wire connector |
Non-Patent Citations (1)
| Title |
|---|
| 陈文添: "《浅谈水轮发电机定子端接头绝缘与处理》", 《大电机技术》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106685121A (en) * | 2017-01-16 | 2017-05-17 | 嘉兴市大成电气新材料有限公司 | Flexible plug sleeve for vertical hydraulic generator stator coil bar lead insulation box and assembly method of flexible plug sleeve |
| CN106685121B (en) * | 2017-01-16 | 2023-12-05 | 浙江博菲电气股份有限公司 | Flexible plugging sleeve for vertical hydraulic generator stator bar lead insulation box and assembly method thereof |
| CN106787526A (en) * | 2017-03-30 | 2017-05-31 | 上海电气集团上海电机厂有限公司 | A kind of manufacture craft of brushless low speed synchromotor insulation booth infusion epoxy resin glue |
| CN106787526B (en) * | 2017-03-30 | 2019-03-29 | 上海电气集团上海电机厂有限公司 | A kind of manufacture craft of brushless low speed synchromotor insulation booth infusion epoxy resin glue |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151223 |
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| WD01 | Invention patent application deemed withdrawn after publication |